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The Sun and Moon Today

  • The Sun as seen today from NASA SDO.
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Astronomy Picture of the Day

Astronomy Picture of the Day

Satellite Events for Tonight

New Theory Explains Why So Many Exoplanets Crowd Close to Their Stars

Reported by Universe Today

The observed exoplanet population contains a large number of solar systems where multiple exoplanets follow short orbital periods. The most well-known example of a compact solar system is the TRAPPIST-1 system. There are many others, and exoplanet scientis...
  • By: Evan Gough (https://www.universetoday.com/authors/ion23drive)
  • On: Wed, 25 Jun 2025 02:36 +0000

Camera Systems as Scientific Instruments in Artemis III EVAs

Reported by Universe Today

What imaging systems can NASA’s Artemis astronauts use on the Moon to conduct groundbreaking science and efficient documentation on the lunar surface? This is what a recent study presented at the 56th Lunar and Planetary Science Conference (LPSC) aspired...
  • By: Laurence Tognetti, MSc (https://www.universetoday.com/authors/laurencetognetti)
  • On: Wed, 25 Jun 2025 02:36 +0000

Pulsars Could Have Tiny Mountains

Reported by Universe Today

Pulsars are spinning neutron stars, with several times the mass of the Sun compressed into a sphere just 10 km across. They have a theoretical "death line,” a point where pulsars should stop emitting radio waves as they slow down. But researchers have de...
  • By: Mark Thompson (https://www.universetoday.com/authors/mark)
  • On: Wed, 25 Jun 2025 02:36 +0000

Mercury - The Tiny Planet That's Been Baffling Scientists Everywhere

Reported by Universe Today

Mercury doesn't give up its secrets easily. The smallest planet in our Solar System is also one of the most extreme, a sun-scorched, metal-rich world with a puzzling magnetic field and lavas unlike anything found on Earth. Now, groundbreaking laboratory ex...
  • By: Mark Thompson (https://www.universetoday.com/authors/mark)
  • On: Wed, 25 Jun 2025 02:36 +0000

First Amazing Solar Views from NASA’s CODEX Imager Released

Reported by Universe Today

A new solar observing telescope on the exterior of the International Space Station is open for business. NASA recently released images from the newly commissioned Coronal Diagnostic Experiment (CODEX) mounted on the station....
  • By: David Dickinson (https://www.universetoday.com/authors/david-dickinson)
  • On: Wed, 25 Jun 2025 02:36 +0000

The Milky Way is More Clumpy than Astronomers Thought

Reported by Universe Today

Astronomers have found a new way of accurately mapping the outer gas disk of the Milky Way using the positions of young stars. In the process, they've also discovered that our galaxy's structure is more complex than everyone thought, complete with tufty-lo...
  • By: Carolyn Collins Petersen (https://www.universetoday.com/authors/cc-petersen)
  • On: Wed, 25 Jun 2025 02:36 +0000